As a commercial (engineering) software, USFOS needs to be manually installed. I tried this today on elementary OS, powered by frugal hardware, and USFOS runs just fine. At minimum, the following are needed:

usfos, xact binary, and usfos_etc files.

A valid license usfos.key file.

A computer with Linux 64-bit OS to run on.

As each binary needs to be separately downloaded from USFOS site, I’ve automated this via wget. Here are the commands to run in a terminal:

The last line above makes downloaded files executable. Add usfos commands to PATH, so they can be accessible from a working folder. This following is to be added to ~/.bashrc (in my case, ~/.zshrc, since I use zsh as my shell):

export PATH=$HOME/usfos/bin:$PATH
export USFOS_HOME=$HOME/usfos

Reload .bashrc with the command in terminal:

. ~/.bashrc

Run xact & from terminal to load the familiar UI as below:

Place a valid license key, usfos.key, in ~/usfos/etc folder — this is required to perform analysis. (USFOS team is kind enough to make model and results viewer not depend on the license key.) Docs and examples may be separately downloaded — as required. For improving input editing experience, I’ve previously shared plugins and clip book.